Vulnerability in Emclient Em Client
CVE-2020-12618
eM Client before 7.2.33412.0 automatically imported S/MIME certificates and thereby silently replaced existing ones. This allowed a man-in-the-middle attacker to obtain an email-validated S/MIME certificate from a trusted CA and replace the public key of the entity to be impersonated. This enabled the attacker to decipher further communication. The entire attack could be accomplished by sending a single email.
EPSS: 0.003 (27.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Emclient Em_client
- N/a — versions n/a
References
- cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-12618?
- CVE-2020-12618 is a medium-severity vulnerability in Emclient Em Client. CVSS score: 4.8/10. Published 2020-08-20.
- How severe is CVE-2020-12618?
- Medium severity. CVSS v3 base score is 4.8 out of 10.